class_docstr: Interface for implementing a Trial Scheduler class.
  
  Note to Tune developers: If a new scheduler is added, please update
  `air/_internal/usage.py`.
docstr: Notification for the error of trial.
  
  This will only be called when the trial is in the RUNNING state.
docstr_tok: ["Notification","for","the","error","of","trial",".","This","will","only","be","called","when","the","trial","is","in","the","RUNNING","state","."]
code: def on_trial_error(
      self, tune_controller: "TuneController", trial: Trial
  ):
      """Notification for the error of trial.
  
      This will only be called when the trial is in the RUNNING state.
      """
  
      raise NotImplementedError
  
imports: from typing import Dict, Optional, TYPE_CHECKING
  from ray.air._internal.usage import tag_scheduler
  from ray.tune.result import DEFAULT_METRIC
  from ray.tune.experiment import Trial
  from ray.util.annotations import DeveloperAPI, PublicAPI
label_desc: Use image node_id 6 for calling the TrialScheduler obj's underlying member method code with example usage: obj.on_trial_error(tune_controller, trial) without return types